Anger
The flame that keeps on burning.
It builds like a rising tide and hits just as violently. Sometimes, you'll see it coming, and other times it will rise out of nowhere. It pulls you in, makes you addicted to the feeling and that it's right and you need to hold onto it. What happens when you hold onto it? It's like holding onto an open flame, leaves you with scorch marks and burns which take even longer to heal.
It steals moments of your day like a thief in the night, creeps into your perfect day and steals the joy and leaves you feeling the fury of a thousand suns.
No one understands what this is like unless you have experienced it, and each situation is unique. The damage it leaves on your mind and body. The feeling of being angry at someone or something gives you a rush, and it's oddly justifying, but it's a false economy; it becomes destructive.
I've held onto anger for too long, most of my life, and I've never really worked out how to deal with it properly until recently and even then, I'm not sure I'm getting it right half the time.
The flame doesn't just hurt the person holding it, but often the flame sets alight people closest and situations close by.